68 lines
1.7 KiB
Rust
68 lines
1.7 KiB
Rust
use std::io::stdin;
|
|
|
|
fn can_lowerbound_accept(n: usize, l: usize) -> bool {
|
|
if l % 2 == 0 {
|
|
let d = n / l;
|
|
if d >= l / 2 { true } else { false }
|
|
} else {
|
|
let d = n / l;
|
|
if d >= l / 2 { true } else { false }
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let mut line = String::new();
|
|
stdin().read_line(&mut line).unwrap();
|
|
let mut iter = line
|
|
.trim_ascii_end()
|
|
.split(' ')
|
|
.map(|x| x.parse::<usize>().unwrap());
|
|
|
|
let n = iter.next().unwrap();
|
|
let l = iter.next().unwrap();
|
|
|
|
let mut candidate = vec![];
|
|
|
|
for i in l..=100 {
|
|
if 2 * n % i == 0 {
|
|
let d = 2 * n / i;
|
|
if d % 2 != 0 { // even
|
|
if i % 2 != 0 {
|
|
continue;
|
|
} else {
|
|
let mid = d / 2;
|
|
if mid < i / 2 - 1 {
|
|
break;
|
|
}
|
|
let lo = mid + 1 - i / 2;
|
|
for j in lo..lo + i {
|
|
candidate.push(j);
|
|
}
|
|
break;
|
|
}
|
|
} else { // odd
|
|
if i % 2 == 0 {
|
|
continue;
|
|
} else {
|
|
let mid = d / 2;
|
|
if mid < i / 2 {
|
|
break;
|
|
}
|
|
let lo = mid - i / 2;
|
|
for j in lo..lo + i {
|
|
candidate.push(j);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if candidate.len() == 0 {
|
|
println!("-1");
|
|
} else {
|
|
for i in candidate {
|
|
print!("{} ", i);
|
|
}
|
|
}
|
|
}
|